Mark Williams has set up a second-round tie with Ronnie O'Sullivan after a 10-6 win over Liu Chuang at the World Championship in Sheffield.
The two-time champion got himself into a 9-3 lead before Chuang made life difficult for the Welshman.
The 21-year-old Chinese competitor claimed the next three frames as Williams struggled to close out the match.
However, the 37-year-old clinched the decisive frame to book his place in the next round.
Williams has lost on all three occasions that he has previously played O'Sullivan at the Crucible.
Written by
Jack Prescott
Jack Prescott
